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diff --git a/gr-digital/python/qa_cma_equalizer.py b/gr-digital/python/qa_cma_equalizer.py
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+++ b/gr-digital/python/qa_cma_equalizer.py
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+#!/usr/bin/env python
+#
+# Copyright 2006,2007,2010,2011 Free Software Foundation, Inc.
+# 
+# This file is part of GNU Radio
+# 
+# GNU Radio is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+# 
+# GNU Radio is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+# 
+# You should have received a copy of the GNU General Public License
+# along with GNU Radio; see the file COPYING.  If not, write to
+# the Free Software Foundation, Inc., 51 Franklin Street,
+# Boston, MA 02110-1301, USA.
+# 
+
+from gnuradio import gr, gr_unittest
+import digital_swig
+
+class test_cma_equalizer_fir(gr_unittest.TestCase):
+
+    def setUp(self):
+    	self.tb = gr.top_block()
+
+    def tearDown(self):
+    	self.tb = None
+    	
+    def transform(self, src_data):
+	SRC = gr.vector_source_c(src_data, False)
+	EQU = digital_swig.cma_equalizer_cc(4, 1.0, .001, 1)
+	DST = gr.vector_sink_c()
+	self.tb.connect(SRC, EQU, DST)
+	self.tb.run()
+	return DST.data()
+
+    def test_001_identity(self):
+    	# Constant modulus signal so no adjustments
+	src_data      = (1+0j, 0+1j, -1+0j, 0-1j)*1000
+	expected_data = src_data
+	result = self.transform(src_data)
+	self.assertComplexTuplesAlmostEqual(expected_data, result)
+
+if __name__ == "__main__":
+    gr_unittest.run(test_cma_equalizer_fir, "test_cma_equalizer_fir.xml")